if (document.images) {
  thechef_up = new Image();
  thechef_up.src = "images/thechef_up.gif";
  thechef_over = new Image();
  thechef_over.src = "images/thechef_over.gif";

  services_up = new Image();
  services_up.src = "images/services_up.gif";
  services_over = new Image();
  services_over.src = "images/services_over.gif";

  catering_up = new Image();
  catering_up.src = "images/catering_up.gif";
  catering_over = new Image();
  catering_over.src = "images/catering_over.gif";

  recipes_up = new Image();
  recipes_up.src = "images/recipes_up.gif";
  recipes_over = new Image();
  recipes_over.src = "images/recipes_over.gif";
  
  salsas_up = new Image();
  salsas_up.src = "images/salsas_up.gif";
  salsas_over = new Image();
  salsas_over.src = "images/salsas_over.gif";

  contact_up = new Image();
  contact_up.src = "images/contact_up.gif";
  contact_over = new Image();
  contact_over.src = "images/contact_over.gif";

}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}